# -*- coding: utf-8 -*-
##############################################################################
#
#    datenpol gmbh
#    Copyright (C) 2013-TODAY datenpol gmbh (<http://www.datenpol.at/>)
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
from datetime import datetime

from odoo import api, fields, models, _
from odoo.tools import float_is_zero
from odoo.exceptions import ValidationError, UserError
from odoo.tools import DEFAULT_SERVER_DATETIME_FORMAT


class SaleOrder(models.Model):
    _name = 'sale.order'
    _inherit = ['sale.order', 'dp_custom.helper']

    ASSEMBLY_STATES = [('created', 'nicht freigegeben'),
                       ('approved', 'Produktionsfreigabe'),
                       ('wait', 'freigegeben'),
                       ('failed', 'Fehler Freigabe'),
                       ('started', 'Produktion begonnen'),
                       ('done', 'Produktion fertig'),
                       ('packed', 'Verpackt'),
                       ('delivered', 'Geliefert')]

    assembled = fields.Boolean(string='Zusammengebaut')
    line_id = fields.Many2one(comodel_name='res.line', string='Produktionslinie')
    assembly_state = fields.Selection(ASSEMBLY_STATES, string="Status PG", track_visibility='onchange')
    quote_name = fields.Char(compute='_compute_quote_name')
    internal_notes = fields.Text()
    assembly_notes = fields.Text()
    earliest_scheduled_date = fields.Datetime(compute='_compute_earliest_scheduled_date')
    positions = fields.Integer(string='Positionen', compute='_compute_positions')
    num_items = fields.Integer(string='Anzahl der Artikel', compute='_compute_num_items')

    @api.multi
    def _compute_positions(self):
        for record in self:
            record.positions = len(record.order_line)

    @api.multi
    def _compute_num_items(self):
        for record in self:
            num_items = 0
            for line in record.order_line:
                if line.product_uom == self.env.ref('product.product_uom_unit'):  # wenn die Mengeneinheit Stk. ist
                    num_items += line.product_uom_qty
            record.num_items = num_items

    @api.multi
    def _compute_earliest_scheduled_date(self):
        for record in self:
            earliest_scheduled_date = False
            for picking in record.picking_ids:
                if not earliest_scheduled_date or earliest_scheduled_date > fields.Datetime.from_string(
                        picking.scheduled_date):
                    earliest_scheduled_date = fields.Datetime.from_string(picking.scheduled_date)
            if earliest_scheduled_date:
                record.earliest_scheduled_date = earliest_scheduled_date

    @api.multi
    def _compute_quote_name(self):
        for record in self:
            if record.state in ['draft', 'sent']:
                record.quote_name = record.name.replace('ATOC', 'ATOF')
            else:
                record.quote_name = record.name

    @api.model
    def pg_get_orders(self, line, state, limit):
        line_id = self.env['res.line'].search([('name', '=', line)])
        orders = self.search([('line_id', '=', line_id.id), ('assembly_state', '=', state)], order='id ASC',
                             limit=limit)
        order_list = []
        for order in orders:
            attachmets = self.env['ir.attachment'].search([('res_model', '=', 'sale.order'), ('res_id', '=', order.id)])
            attachment_list = []
            for attachment in attachmets:
                attachment_list.append({
                    'filename': attachment.name,
                    'binary': attachment.datas.decode()
                })
            delivery_date = False
            for picking_id in order.picking_ids:
                if not delivery_date:
                    delivery_date = picking_id.scheduled_date
                elif datetime.strptime(picking_id.scheduled_date, DEFAULT_SERVER_DATETIME_FORMAT) < datetime.strptime(
                        delivery_date, DEFAULT_SERVER_DATETIME_FORMAT):
                    delivery_date = picking_id.scheduled_date

            order_list.append({
                'id': order.id,
                'name': order.name,
                'attachments': attachment_list,
                'internal_notes': order.internal_notes,
                'assembly_notes': order.assembly_notes,
                'user_id': order.user_id.name,
                'delivery_date': delivery_date
            })
        return order_list

    @api.model
    def pg_create_quotation(self, vals):
        if not vals.get('portal_id', False):
            raise ValidationError(
                _("Der Kunde mit der Portal-ID \'%s\' kann nicht zugeordnet werden" % vals['portal_id']))
        partner = self.env['res.partner'].search([('portal_id', '=', vals['portal_id'])])
        if not partner:
            raise ValidationError(
                _("Der Kunde mit der Portal-ID \'%s\' kann nicht zugeordnet werden" % vals['portal_id']))
        delivery_partner = self.env['res.partner']
        delivery_vals = {}
        if vals.get('portal_delivery_id', False):
            delivery_partner = self.env['res.partner'].search([('portal_id', '=', vals['portal_delivery_id'])])
            delivery_vals['portal_id'] = vals['portal_delivery_id']
        for key in list(vals.keys()):
            if key.startswith('delivery_'):
                delivery_vals[key.replace('delivery_', '')] = vals[key]

        delivery_vals = delivery_partner.with_context(sst_1=True).remove_not_specified_fields(delivery_vals)
        delivery_vals = delivery_partner.correct_values(delivery_vals)
        delivery_vals['parent_id'] = partner.id

        if delivery_partner:
            delivery_partner.write(delivery_vals)
        else:
            if not delivery_vals.get('type', False):
                delivery_vals['type'] = 'delivery'
            delivery_partner = delivery_partner.create(delivery_vals)

        attachment_vals = vals.get('attachment_ids', False)
        order_line_vals = vals.get('order_lines', False)
        vals = self.remove_not_specified_fields(vals)
        vals = self.correct_values(vals)
        vals.update({
            'partner_id': partner.id,
            'fiscal_position_id': partner.property_account_position_id.id,
            'user_id': partner.user_id.id,
            'payment_term_id': partner.property_payment_term_id.id,
            'partner_shipping_id': delivery_partner.id,
            'partner_invoice_id': partner.id
        })
        order_id = self.create(vals)
        if attachment_vals:
            order_id.pg_create_sale_order_attachments(attachment_vals)
        if order_line_vals:
            order_id.pg_create_order_lines(order_line_vals)
        return {'id': order_id.id, 'name': order_id.name}

    @api.multi
    def pg_create_sale_order_attachments(self, values):
        self.ensure_one()
        if isinstance(values, list):
            for vals in values:
                self.create_attachment(self, vals)
        else:
            self.create_attachment(self, values)

    @api.multi
    def pg_create_order_lines(self, values):
        order_lines = []
        for vals in values:
            vals = self.env['sale.order.line'].correct_values(vals)

            lot_id = False
            if vals.get('lot_id', False):
                if vals['lot_id'].get('attachment_ids', False):
                    lot_attachment_values = vals['lot_id']['attachment_ids']
                else:
                    lot_attachment_values = []
                lot = self.env['stock.production.lot'].create({
                    'name': vals['lot_id']['name'],
                    'product_id': vals['product_id'],
                    'notes': vals['lot_id']['notes']
                })
                for lot_attachment_vals in lot_attachment_values:
                    self.create_attachment(lot, lot_attachment_vals)
                lot_id = lot.id
            order_lines.append(self.env['sale.order.line'].create({
                'order_id': self.id,
                'name': vals['name'],
                'product_id': vals['product_id'],
                'price_unit': vals['price_unit'],
                'product_uom_qty': vals['product_uom_qty'],
                'lot_id': lot_id,
                'from_designbox': True,
            }))
        return order_lines

    @api.model
    def create_attachment(self, record, vals):
        attachment_vals = {
            'name': vals['filename'],
            'datas': vals['binary'],
            'from_designbox': True,
            'datas_fname': vals['filename'],
            'res_model': record._name,
            'res_id': record.id,
        }
        self.env['ir.attachment'].create(attachment_vals)

    @api.model
    def correct_values(self, vals):
        if vals.get('line_id', False):
            line_id = self.env['res.line'].search([('name', '=', vals['line_id'])])
            if line_id:
                vals['line_id'] = line_id.id
            else:
                raise ValidationError(
                    _("Produktionslinie \'%s\' kann nicht zugeordnet werden" % vals['line_id']))
        return vals

    @api.model
    def _get_specified_fields(self):
        return ['origin', 'client_order_ref', 'note', 'date_order', 'assembled', 'line_id', 'partner_id',
                'fiscal_position_id', 'user_id', 'payment_term_id', 'partner_delivery_id', 'partner_invoice_id']

    @api.multi
    def write(self, vals):
        res = super(SaleOrder, self).write(vals)
        if vals.get('assembly_state', False) and vals.get('assembly_state', False) == 'done':
            self.message_post(body='Produktion fertig')

        return res

    @api.multi
    def action_invoice_create(self, grouped=False, final=False):
        inv_obj = self.env['account.invoice']
        precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
        invoices = {}
        references = {}
        for order in self:
            collective_bill = order.partner_id.collective_bill and "x" or order.id
            group_key = order.id if grouped else (collective_bill, order.partner_invoice_id.id, order.currency_id.id)
            for line in order.order_line.sorted(key=lambda l: l.qty_to_invoice < 0):
                if float_is_zero(line.qty_to_invoice, precision_digits=precision):
                    continue
                if group_key not in invoices:
                    inv_data = order._prepare_invoice()
                    invoice = inv_obj.create(inv_data)
                    references[invoice] = order
                    invoices[group_key] = invoice
                elif group_key in invoices:
                    vals = {}
                    if order.name not in invoices[group_key].origin.split(', '):
                        vals['origin'] = invoices[group_key].origin + ', ' + order.name
                    if order.client_order_ref and order.client_order_ref not in invoices[group_key].name.split(
                            ', ') and order.client_order_ref != invoices[group_key].name:
                        vals['name'] = invoices[group_key].name + ', ' + order.client_order_ref
                    invoices[group_key].write(vals)
                if line.qty_to_invoice > 0:
                    line.invoice_line_create(invoices[group_key].id, line.qty_to_invoice)
                elif line.qty_to_invoice < 0 and final:
                    line.invoice_line_create(invoices[group_key].id, line.qty_to_invoice)

            if references.get(invoices.get(group_key)):
                if order not in references[invoices[group_key]]:
                    references[invoice] = references[invoice] | order

        if not invoices:
            raise UserError(_('There is no invoicable line.'))

        for invoice in invoices.values():
            if not invoice.invoice_line_ids:
                raise UserError(_('There is no invoicable line.'))
            # If invoice is negative, do a refund invoice instead
            if invoice.amount_untaxed < 0:
                invoice.type = 'out_refund'
                for line in invoice.invoice_line_ids:
                    line.quantity = -line.quantity
            # Use additional field helper function (for account extensions)
            for line in invoice.invoice_line_ids:
                line._set_additional_fields(invoice)
            # Necessary to force computation of taxes. In account_invoice, they are triggered
            # by onchanges, which are not triggered when doing a create.
            invoice.compute_taxes()
            invoice.message_post_with_view('mail.message_origin_link',
                                           values={'self': invoice, 'origin': references[invoice]},
                                           subtype_id=self.env.ref('mail.mt_note').id)
        return [inv.id for inv in invoices.values()]


class SaleOrderLine(models.Model):
    _inherit = 'sale.order.line'

    lot_id = fields.Many2one(comodel_name='stock.production.lot', string='Lot')
    from_designbox = fields.Boolean(string='Import von Designbox', readonly=True)
    product_id = fields.Many2one(domain=[('sale_ok', '=', True), ('can_be_sold_unconfigured', '=', True)])

    @api.multi
    def write(self, vals):
        for record in self:
            if record.from_designbox and set(vals.keys()).intersection(
                    ['product_uom_qty', 'product_uom', 'price_unit']):
                raise ValidationError(_("Menge und Preis können von Produkten aus der Designbox nicht geändert werden"))
        return super(SaleOrderLine, self).write(vals)

    @api.model
    def correct_values(self, vals):
        if vals.get('product_id', False):
            product_id = self.env['product.product'].search([('default_code', '=', vals['product_id'])])
            if product_id:
                vals['product_id'] = product_id.id
            else:
                raise ValidationError(
                    _("Produkt \'%s\' kann nicht zugeordnet werden" % vals['product_id']))
        return vals